Vince Gillian does not do Sopranos or Shield style endings. Stuff has to be direct and spelled out. Hence why the fans are speculating and guessing on very concrete endings like Jimmy getting a specific jail sentence. Or Jimmy committing suicide like Chuck and them showing it and not implying it. The BB writers obviously did not like how they left Jesse's ending ambiguous, though optimistic, so they gave him one final moment in the sun to show and confirm his fate to the audience so that there was no misunderstanding. Jesse is battle scarred, but free.
Gene will not be getting his own movie. So the last episode is it for him. And with an hour left there is not a lot of room for him to make some major adjustment again like disappear to another state with a new name. Suicide is a major theme for BCS. Chuck, Nacho, and Howard being framed as one. But Walt's last stand was almost framed like a heroic suicide. They even game him a Christ wound in his side just to drive home the message. I cannot see them doing that again.
Jimmy will get caught because he is an idiot for the entire Gene timeline. Not just this season. He is working in public during the daytime as a manager two weeks after being on the FBI's most wanted list. And telling people his name was Saul Goodman no more than six weeks from the time of Walt having his shootout and Jimmy's face being all over the news. He is either written as being an idiot. Or written as him wanting to be caught but being too cowardly to turn himself in so he puts himself in positions where he will be caught. But his reaction or Marion puts him more in the idiot camp unfortunately.
After BB ended they basically confirmed that Jesse escaped into freedom. That Skyler took the money. And that Walt became one of the most infamous drug dealers and wild stories in modern history. We have no idea what really happens to Gene and his story could end anywhere. From suicide. Capture. Running away with Kim. Murder-suicide with Kim. Life in jail. Few years in jail. Witness protection. Disappearing again. Kim being his lawyer. Jimmy defending himself as Saul. I would not call the last episode afterthoughts unless it ends with no new resolution.